Questions Asked on
January 23, 2013

  1. AP Chem

    The vapor pressure of diethyl ether C2H5OC2H5 is greater than the vapor pressure of ethyl alcohol, C2H5OH at any temperature. Which best accounts for this difference?

    asked by Anonymous
  2. chemistry

    CH3COONH4 + aq -> CH3COO-+ NH4+ what ammonium acetate comletely dissociate in aq.(wate)

    asked by tejpal
  3. ENGLISH

    we had to take this news lead and turn it into a broadcast sentence PORTAGE, MI — The Portage Public Schools Board of Education said former Superintendent Richard Perry engaged in several acts of misconduct all stemming from his “extramarital affair”

    asked by Blaze
  4. calculus 2

    The region bounded by y=e^(-x^2),y=0 ,x=0 ,x=1 and is revolved about the y-axis. Find the volume of the resulting solid.

    asked by Nycw
  5. chemistry

    why mass of mg is determined indirectly by measuring its length instead of passing by balance?

    asked by Riana
  6. Chemistry

    Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 °C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure (in torr) of a solution made from dissolving 16.6 g of biphenyl in 26.0 g of

    asked by Ocean
  7. maths-urgently needed

    Construct a triangle PQR with base PQ = 8.4 cm , angel P = 45 degree and PR - QR = 2.8 cm ??

    asked by Anonymous
  8. math

    If Mark invests $8000 at 6% simple interest rate, how much money must he invest at an 8% simple interest rate in order for the interest on each investment to be $500. Assume that the amount of time for both investments is the same.

    asked by devin
  9. Chemistry

    If u place a metal cube in beaker as a catalyst, what effect will it have on the reaction? And why?

    asked by Jessica
  10. Chemistry

    Suppose a student started with 133 mg of trans-cinnamic acid and 0.50 mL of a 10% (v/v) bromime solution, and after the reaction and workup, ended up with 0.236 g of brominated product. Calculate the student's theoretical and percent yields.

    asked by Anonymous
  11. Chemistry

    Can someone please explain/interpret the gaseous and solid PCl5 in Raman and IR spectra.The details of spectrums are as follows: Solid state: Raman: 662 458p 360p 283 255 238 178 IR: 661 444 285 254 Gaseus state: Raman: 580 392p 281p 272 261 102 IR: 583

    asked by Anonymous
  12. English

    Identify the term that best describes the words/phrases in parentheses. 1. The teacher asked her pupils to (stay) put during the screening of the documentary. linking verb action verb 2. The committee judged the logo (the most appropriate symbol) for the

    asked by Leah
  13. Algebra

    how to flowchart and backtrack 10 = 0.25x - 0.25

    asked by Alex
  14. maths-urgently needed

    If the ratio of the legs of a right triangle is 1 : 2, then the ratio of the corresponding segments of the hypotenuse made by a perpendicular upon it from the vertex is

    asked by Anonymous
  15. Physics

    A source produces 2000 sound waves in 4 seconds. The distance between two consecutive compressions is 55cm. Find the frequency, wavelength and speed of sound wave

    asked by Mano
  16. maths-urgently needed

    the diameter of a metallic ball is 14 cm. what is the mass of the ball, if the density of the metal is 6gm per cm^3.(cm cube)?

    asked by Anonymous
  17. physics

    equal masses m of stone and wood reach thermal equilibrium at T=290. the initial temperature of the wood reach is T=285. find the initial temperature of the stone.(specific heat of wood=1764 and specif heat of stone =882)

    asked by kingwendu
  18. math

    In a class of 40 students, 27 like math and 25 like filipino. At most how many students do not like at least one of these subject? (With solution pls...thanks....)

    asked by HELP HELP HELP MNHS
  19. math

    Please give me the technique (short method) in this question... How many 4-digit numbers are multiples of 9?

    asked by HELP HELP HELP MNHS
  20. set (math)

    A class of 47 students took examination in algebra and geometry. If 29 passed algebra and 26 passed geometry and 4 failed in both subjects, how many passed both subjects? With solution please, tnx...

    asked by HELP HELP HELP MNHS
  21. buisness essentials

    Ricki Cohn Encyclopedia sales Commission rate: 11% Month’s sales: $2,550 What is the monthly commission?

    asked by tim
  22. physics

    1. A force of 720N stretches a certain spring a distance of 15 cm. What is its force constant? If a 60-kg mass is hung on it, how far will it stretch?

    asked by black n' white
  23. probability

    If A and B are independent and P(A) =P(B|A) =.4, What is P(A∪B) =?

    asked by Robocop
  24. Math

    A rectangular table top measures 1/6 of a meter long by 1/5 of a meter wide. What is its area?

    asked by Anonymous
  25. physics

    2. A partial record of a free falling body showed only the three consecutive points. The distance from the first to the second was 24.25 cm. that from the first to the third was 58.92 cm. The time interval was 1/10. Find the acceleration and the

    asked by black n' white
  26. Algebra 2

    Factor completely 4ab + 2a + 6b + 3 (2a + 3) (2b + 1)?

    asked by Lily
  27. social impact on technology

    what the biggest cause of unemployment today? A. outsourcing B. Productivity

    asked by debbie
  28. Algebra 2

    Simplify the polynomial [(6x-8)-2x]-[(12x-7)-(4x-5)]. I came up with two answers: 36x^2 - 72x + 35 or -12x^2 + 8x - 2 Are either one of these the correct answer?

    asked by Lily
  29. maths

    prove that the length of the perpendicular from the origin to the straight line joining the two points having coordinates ( a cos alpha, a sin alpha) and (a cos beta, a sin beta) is a cos { ( alpha + beta)/2}.

    asked by Anonymous
  30. Physics

    A trolley of mass 2kg accerates from rest across a rough surface at 2,5m.s.It experiences a frictional force of 3N.Calculate the velocity of trolley after 4s and the distance travelled by the trolley in 4s

    asked by Monique
  31. science

    When you hit a nail into a board using a hammer, the head of the nail gets warm. In terms of kietic and thermal energy, describe why you think this happens.

    asked by lisa
  32. Chemistry-II (Percent Composition)

    1. Identify the percent composition of sodium carbonate. 2. Determine the percent composition of calcium in calcium carbonate. Pls. help me... my prob is that there is something in the solution that bothers me.. pls.kindly show me how to do.. i'll thank u

    asked by jezzaD.
  33. chemistry

    what volume of a 2.5m stock soltio of acetic acid (HC2H3O2) is required to prepare 100.0 mililiters of a 0.50m acetic acid solution?

    asked by Anonymous
  34. Algebra 2

    Simplify (2y)(4xy^3). 8xy^4?

    asked by Lily
  35. Physics

    A long jumper leaves the ground at an angle of 15.1◦ to the horizontal and at a speed of 10.9 m/s. How far does he jump? The acceleration due to gravity is 9.8 m/s2 . Answer in units of m 010 (part 2 of 2) 10.0 points What maximum height does he reach?

    asked by Patrick
  36. Chemistry

    how many electrons take part in redox reaction: Cl2 -> ClO3^-

    asked by yoshii
  37. Math

    How to solve X^(5-log x^3)=100

    asked by chacho
  38. business management

    Robert recently was hird as a technician a firm he is being paid 1,250 every two weeks his monthly bills are. Given robert's expenses, how much money will he have for leisure spending in a given year?

    asked by marcel
  39. Business Math

    I did these, but the answers I got didn't match the ones in the back of the book. If 135 is decreased by 75%, what is the new amount? A number is decreased by 40% to 525. What is the original amount? The cost of a pound of nails increased from $2.36 to

    asked by tmouery
  40. geography

    how is an oasis formed

    asked by Anonymous
  41. Physics HELP!!

    Two iron spheres each have a volume of 10 cm^3 and a mass of 78g. How many electrons must be placed on each sphere so that the electrostatic force of repulsion between them just balances the force of gravitational attraction? Assume the distance between

    asked by Maria
  42. maths

    factorize -> 3a^2 +6a^2 x^2 - 3a^3 x ????

    asked by tuhituhi
  43. maths

    DIVIDE X^6 -7^3 -8 BY THE PRODUCT OF X+1 AND ( X^2 +4) ?????

    asked by tuhituhi
  44. food

    if a single bacterium on food has ideal conditions , approximately how many bacteria could be on the food after 3 hours if they double every ten minutes

    asked by pepper
  45. maths

    The angle of elevation of the bottom of a window 10 meter above the ground level from a point on the ground is 30degrees. A pole projecting outwards and upwards from the bottom of the window makes an angle of 30 degrees with the wall. If the angle of

    asked by Anonymous
  46. math

    a boat travels at 16 knots 1st leg: 6hr @ S63W 2nd leg: 4hr @ N10E find time and bearing back to port

    asked by Ashley
  47. maths

    DIVIDE X^6 - 7X^3 - 8 BY THE PRODUCT OF X+1 AND (X^2 + 4) ???????

    asked by tuhituhi
  48. math

    What is a negative 588 divided by two numbers that equal the sum of 7?

    asked by erin
  49. chemistry

    molarity of kmno4 and strength of kmno4 in M/25 solution experiment of oxalic acid.......

    asked by rishabh
  50. chemistry

    calculate the pH of the solution when 25.0ml of 0.0920M HCL is titrated with 0.15ml, 23.0ml, 30.0ml of 0.10M NaOH

    asked by nathalie
  51. Spanish. PLEASE HELP.

    I have know idea what the answers are. Please help me. THANK YOU!! 1. Write the verb form for: yo/hacer. 2. Write the verb form for: ellos/hacer. 3. Write the verb form for: nosotros/hacer. Thank You.

    asked by Deborah
  52. Math

    Gavin wants to estimate the gas mileage in his car. At 85,076 mi, he fills the tank with 10.2 gal of gasoline. At 85,548 mi, he fills the tank with 11.4 gal of gasoline. Find the mileage per gallon. Round to the nearest tenth.

    asked by Tammy
  53. Physics

    A satellite has a mass of 6146 kg and is in a circular orbit 4.57 × 105 m above the surface of a planet. The period of the orbit is 1.6 hours. The radius of the planet is 4.44 × 106 m. What would be the true weight of the satellite if it were at rest on

    asked by Cat
  54. Physics

    For the normal force in the drawing to have the same magnitude at all points on the vertical track, the stunt driver must adjust the speed to be different at different points. Suppose, for example, that the track has a radius of 4.84 m and that the driver

    asked by Cat
  55. maths

    A manufacture of furniture sells a sofa set to a retailer for Rs 23000.the retailer, inturn, sells the sofa set to a customer for Rs 29000.find the VAT rate as percent,if the retailer pays Rs 520 as VAT.

    asked by Anonymous
  56. math

    The area of a parallogram is 128 sq miles . Find its base &height . 2x-4. 2x+ 4

    asked by erin
  57. working in a pharmacy

    mr.shawn is a pharmacy assistant .he is serving a customer,and assumed that he knew what the cutomer wanted.he lost the sale.this case illustrates that mr.shawn a.lost interest in the sale b.failed to determine his customers needs. c.did not hve adequate

    asked by susue
  58. math

    The ship is 40 miles south and 20 miles east of port how do you know or calculate what bearing the ship would have to sail back to port

    asked by Rich murray
  59. working in a pharmacy

    specialized products such as gifts are normally displayed on a.the shelves b.the counter c.the gondola d.in the window my anser is a

    asked by susue
  60. math

    a plane flies at 430mph the bearing from Paris to Moscow is 78drgrees and the distance is 1800 mi if the wind is blowing 65mph at 340degrees what heading will take you from Paris to Moscow and how long will it take? include drawing and trip back

    asked by Ashley
  61. working in a pharmacy

    when a special begins to lose its impact you should a.transfer the products to theshelves at their normal price b.move the products to another spot c.send the stock back to the manufacture or supplier. d.set up an attractive display using your product

    asked by susue
  62. working in a pharmacy

    when working in a pharmacy,the third step that you should do when answeringthe telephone is a..identify yourself b.ask the callers name c.give the pharmacy name d.write down the callers name my answer is b

    asked by susue
  63. workin in a pharmacy

    when wrapping a normal purchase,the pharmacy assistant should a.remove the price tag b.use plenty of wrapping paper c.never use bags d.use a minimum of paper and cellulose tape my answer is d

    asked by susue
  64. physics

    an object weighing 15 newtons is lifted from the ground to a height of 0.22 meter. What is the approximate increase in the object's gravitational potential energy?

    asked by sarah
  65. math

    What are the basic elements of an effective medical office financial policy?

    asked by sara
  66. working in a pharmacy

    if a very healthy looking young lady hands you a perscription ,you can assume she a.has broughtit on behalf of someone else b.is not sick c.is sick. d.came from the doctors office my answer is d

    asked by susue
  67. Engish Literature

    Chapter Seven explores the role of symbols in conveying literary themes. Themes are abundant in literaryworks (though they are at some times more obvious than at others). Select one short story from the reading assignments (from either Week One or Week

    asked by Anonymous
  68. Scientific Notation

    I got all of them so far EXCEPT this one... help? Thank you! Convert the following into scientific notation: 1/137

    asked by Carl
  69. Statistics

    The estimated standard error, sM, provides a measure of the average or standard distance between _____. a score and the population mean (X and ì) a sample mean and the population mean (M and ì) a score and the sample mean (X and M) None of the other

    asked by Jackie
  70. Calculus

    Calculate Directly Log (base 4) 2 + log (base 16) 2

    asked by Greg
  71. working in a pharmacy

    understanding terms commonly used in the pharmacy will enable you to .a.impress your pharmacy b.identify your customers real condition c.explain the effects of prescription medicines to your customer d.prescribr a drug to ease your customers condition my

    asked by susue
  72. trig

    y=2cot2x

    asked by Ginger
  73. Precalc?

    Suppose that Cot(theta) = c and 0

    asked by Greg
  74. finance and cost management

    Diazstar corporation sells on terms of 2/10, n/30. 70% of costumers normally avail of the discounts. annual sales are $900,000. 80% of which is made on credit. Cost is approximately 75% of sales. required: 1. average balance in accounts receivable. 2.

    asked by kin
  75. Spanish;CHECK?

    State whether the command is formal ("Ud.") or informal ("tú"). Come la sopa. Anwser: Formal Hable más despacio. Anwser: Formal No compres más ropa. Answer: Formal Beba m�s agua. Answer: Informal No vengas tarde. Answer: Informal

    asked by Vanessa
  76. History

    Are these right? What approach did European settlers in America often take toward their physical enviroment? ---Mostly the eviroment was something to exploit, trees became lumber, land became developed land. What was the goal of the erie canal project?

    asked by Micella
  77. Logarithms

    lnx^5 - lnx^2 = 3 solve for the unknowns as a list. I tried using my calculator but apparently my answer is opposite ends of the universe

    asked by George
  78. french

    What is the answers to le sports chapter 10 page 98

    asked by Anonymous
  79. science

    Why are fossil fuels such rich sources of energy for humans, but rocks are not? A. Rocks are too old to contain energy. B. Rocks are too difficult to extract from Earth. C. Fossil fuels contain energy-rich carbon from once-living organisms. D. Both rocks

    asked by Anonymous
  80. Trigonometry

    Thank you STEVE!!!!! Suppose that Cos (theta) = 1/square root 2 if 0

    asked by George
  81. english

    Its the book "My Father Writes To My Mother" The author senses the ____ of the union of a man and a woman.   shame mystery importance requirement

    asked by ski
  82. 3rd Grade Identify polygons

    Tim wants to make a polygon. He draws six straight line segments. Each line segment connects to two other line segments. Is Tim's shape a polygon? Explain.

    asked by Nora
  83. AP Chemistry

    The solubility of sodium nitrate is 32 grams in 50.0 grams of water at 60 degrees C. If 60 grams of potassium nitrate are mixed with 50.0 grams of water, determine the percentage of sodium nitrate that remains undissolved.

    asked by Katelyn
  84. AP Chemistry

    The solubility of sodium nitrate is 32 grams in 50.0 grams of water at 60 degrees C. If 60 grams of potassium nitrate are mixed with 50.0 grams of water, determine the percentage of sodium nitrate that remains undissolved.

    asked by Katelyn
  85. finance and cost management

    house corporation makes credit sales of 2160 000 per annum. the average age of accounts receivable is 30 days. management considers shortening credit terms by 10 days. cost of money is 18% assume 360 day year how much will the company save from financing

    asked by kin
  86. maths

    A model of a car has a scale of 1:25,a model is 18cm long,calculate the metres and actual length of the car

    asked by salma
  87. physics

    The gauge pressure in both tires of a bicycle is 720 kPa. If the bicycle and the rider have a combined mass of 87.0 kg, what is the area of contact of each tire with the ground? (Assume that each tire supports half the total weight of the bicycle.)

    asked by Anonymous
  88. science

    Using data from this table of molal boiling-point-elevation and freezing-point-depression constants, calculate the freezing and boiling points of each of the following solutions. a)0.39 m glucose in ethanol (b) 22.8 g of decane, C10H22, in 53.9 g CHCl3 (c)

    asked by Hannah
  89. Math

    This table gives the number of AIDS cases reported in men in Los Angeles from 1983-1989: Month and Year of Diagnosis AIDS cases reported in period Jan-June 83 116 July-Dec 83 154 Jan-June 84 197 July Dec 84 269 Jan-June 85 415 July-Dec 85 503 Jan-June 86

    asked by Sara
  90. physics

    In Rutherford's famous scattering experiments that led to the planetary model of the atom, alpha particles (having charges of +2e and masses of 6.64 × 10−27 kg) were fired toward a gold nucleus with charge +79e. An alpha particle, initially very far

    asked by Sara
  91. Physics

    Q1 and Q2 are charged objects of the same sign separated by a distance 29.9 m. If you place another charged object (Q3) a distance 8.0 m from Q2 along a direct line between Q1 and Q2, it experiences no net electric field. So, if the magnitude of Q2 = 9.3

    asked by Sara
  92. math

    I'm trying to get ahead of my class and do the in class project at home but I can't figure out what 20 as a fraction is. Can anyone help me out?

    asked by leslie
  93. math

    the floor area of a rectangular storm shelter is 65 square meters, and its length is 6.5 meteres. What is the width of the storm shelter

    asked by william
  94. math

    Write a sequence of transformations that maps triangle ABC onto triangle A''B''C''. --------------------------------------… A in ABC is 1,9, B in ABC is 3,12, and C in ABC is 4,4. A'' in A''B''C'' is 3,-3, B'' in A''B''C'' is 5,-6, and C'' in A''B''C''

    asked by kayla
  95. Math

    Can someone help me factor this 5x^2+8x+9 What's the technique in factoring

    asked by Julie
  96. TCC

    A 50.0 g silver object is added to 75.5 mL of water contained in a graduated cylinder. The density of silver is 10.5 g/mL. What is the total volume in the graduated cylinder?

    asked by Micelle
  97. Math

    In preparation for a party, Heather fills a jar with gumdrops. Before the party begins, Erik sees the gum drop jar, he (hoping that no one will realize) takes one-third of the drops. Soon after sonia takes takes one-third of the gumdrops(she too, hopes

    asked by Ben Eckman
  98. math

    how do you make a model for 1/3 times 18

    asked by george
  99. Independent studies instead of pe

    Need time to study home work

    asked by Yvonne
  100. Functions, math

    7cosx+35=13+3cosx+24

    asked by Terry
  101. algebra

    I am a number. I am a common multiple of 4, 5, 6, and 7. I am less than 10. What number am I?

    asked by Julie
  102. math

    Maya hs 65 dimes and 104 pennies. She will put them in packages that are all the same. What is the greatest number of packages she can make?

    asked by Anonymous
  103. Math

    Hot dogs come in packages of 8,and rolls come in packages of 6. What is the smallest number of each that you can buy so there are no extras?

    asked by Anonymous
  104. Chemistry

    A 50.0 g silver object is added to 75.5 mL of water contained in a graduated cylinder. The density of silver is 10.5 g/mL. What is the total volume in the graduated cylinder?

    asked by Micelle
  105. math

    waht is the elapsed time for 735 am to 715 pm

    asked by trisd
  106. math

    Ms Adams gave 1/4 of an apples to each of 10 children. How many apples did she give to the children in all?

    asked by joanne
  107. Physics

    Whats the speed of an electron of Bohr's orbit K

    asked by Dyana
  108. AP Chemistry

    Calculate delta H fro the following equation: H20(l, 50.0 C) yields H20(s, -10.0 C)

    asked by Katelyn
  109. Physics

    A 10.-newton force is required to hold a stretched spring 0.20 meter from its rest position. What is the potential energy stored in the stretched spring?

    asked by Vic
  110. Math

    I have a word problem with fractions. Anna estimated that her brother Nick ate about 1/3 of an apple pie, her brother Matt ate 5/8 of the pie, and she ate about 1/4 of the pie. How might you convince Anna that her estimates do not make sense? Be sure to

    asked by Robert
  111. Math 6

    Two questions. 1. Jordan has 4/5 as many DVDs as Joseph. If Jordan has 56 DVDs, then how many does Joseph have? I did this and are my steps correct? 4/5 x 1/56 = 4/224 Then I divide 4/224 = 56 2.Elizabeth has 1 7/10 as many plants as Rosalie has in her

    asked by Moby
  112. Chemistry

    What mass of silver chloride, AgCl will precipitate from a solution that contains 1.50 g of, calcium chloride, CaCl if an excess amount of silver nitrate is present? CaCl2 + 2AgNO3 --> 2AgCl+ Ca(NO3)2 I keep getting 5!but its wrong...right?

    asked by Deepa
  113. Math

    Explain It Ron and Pam each have 20 pennies. Ron will put his pennies into 4 groups. Pam will put her pennies into 5 groups. Who will have more pennies in each group? Explain.

    asked by Shaun
  114. 5-6th grade Math

    Follow instructions: 1) Write the word SOLAR. 2) Add the 5th letter of the alphabetto the right of the last letter from the left. 3) Remove the 19th letter of the alphabet and replace them with the 14th letter of the Alphabet. 4) Remove all vowels EXCEPT

    asked by Meredith
  115. 3rd grade math

    when they reached the lake, they took a swim. jill swam 2/3 across the lake and then swam back to shore. if she had continued how much further would she have had to swim to reach the other side?

    asked by mythreyee
  116. 3rd grade math

    The hike back to jill's house took an hour. they walked for 1/2 hour amd stopped for a water break. how much longer did they have to hike to get back to jill's house. write the answr in a fraction and in minutes.

    asked by mythreyee
  117. 3rd grade math

    when they arrived at jill's, her mother served them a deli sandwich. she cut the sandwich in to 12 sections. jill and her 8 friends each ate 1 section. how much of the sandwich was left over. answer with 2 equal fractions

    asked by mythreyee
  118. 3rd grade math

    for dessert, jill served her friends a chocolate cake. it was cut into 14 slices. two of her friends don't eat chocolate. if everyone else had one slice, how much of the cake remained uneaten.

    asked by mythreyee
  119. Ela

    With the word "and" what do we call all of these related verbs? Example: On one day she gasped, leaned forward, swallowed, and next turned.

    asked by Julian
  120. 3rd grade math

    peter's mother picked him up at jill's house after they ate. then she drove to the market to buy food. the market is 1/3 of the way to peter's house from jill's. if the entire distance is 12 miles, how far is peter's house from the market.

    asked by mythreyee
  121. Calculus

    Find a solution to the equation if possible. Give the answer in exact form and in decimal form. 8=4sin(5x)

    asked by Mike
  122. Calculus

    Find a solution to the equation if possible. Give the answer in exact form and in decimal form. 8=4sin(5x)

    asked by Mike
  123. english

    Proper use of apostrophe in sentence: Oklahoma's dust storms in the 1930's blew away tons of soil. Correct?

    asked by MJ
  124. Physics

    A boat weighing 9.0 × 10 2 newtons requires a horizontal force of 6.0 × 10 2 newtons to move it across the water at 1.5 × 10 1 meters per second. The boat’s engine must provide energy at the rate of

    asked by Vic
  125. Math

    A woman invested $15,000, part at 7% annual interest and the rest at 8%. If she earned $1,100 in income over a one-year period, how much did she invest at 7%?

    asked by John
  126. Science

    How does spatial processes shapes pattern of spatial organisation?

    asked by Fauzeey
  127. Science

    How many grams of water must decompose to produce 2 grams of hydrogen and 16 grams of oxygen?

    asked by Anonymous
  128. math

    how do i answere find the elasped time from 12h 00mins to 3h 27 min?

    asked by lonye
  129. Physics

    A 15.0 m long truck traveling at 40.0 mph has a braking capability of 5.00 m/s2 from this speed. It is approaching a 10.0-m wide intersection with a traffic light that is turning yellow. (a) What is the minimum distance the truck can be from the

    asked by Help Me
  130. Physics

    A stone is dropped from rest from the roof of a 100-m high building; 2.00 s after that, a second stone is thrown straight down with initial speed v0, and the second stone passes the first stone 21.6 m above ground. (a) When are the stones at the same

    asked by Help Me
  131. Physics

    A plane is flying in the horizontal plane. At time t1= 0 s with the components of its velocity are vx= 100 m/s and vy= 120 m/s. At time t2= 20 s the components are vx= 80 m/s and vy = 142 m/s. a. What was the change in the direction of the velocity? b.

    asked by Thank You
  132. Chemistry

    A student collected H2 gas in a buret by displacing water at 22.0 °C. The buret could not be submerged deep enough in a water bath to equalize the pressure. The water level in the buret was 18.2 cm above the water level in the water bath. The volume of

    asked by Amy
  133. Physics

    Aroldis Chapman throws a baseball towards a batter from a height of 2.3 m, the batter is 17.5m away from the release point. The initial velocity is directed 1.8 degrees below the horizontal. Ignore air resistance. (a) What must the initial speed of the

    asked by Thank You
  134. Chemistry

    A student collected H2 gas in a buret by displacing water at 22.0 °C. The buret could not be submerged deep enough in a water bath to equalize the pressure. The water level in the buret was 18.2 cm above the water level in the water bath. The volume of

    asked by Amy
  135. 6 grade Math

    How do I divide this ... 3 divided by 1/2

    asked by Nate
  136. reading

    information on plastic surgery that doesn't include wikipedia

    asked by Anonymous
  137. Math- How many points of intersection are there?

    Let x1, x2,..., x20 be distinct points on the x-axis and let y1, y2,...,y13 be distinct points on the y-axis. For each pair xi, yi, draw the segment connecting xi yo y1. Assume that no three of these segments intersect in one point. How many points of

    asked by Thank You
  138. Chemistry

    Calculate the amount of H2SO4 needed to make 1.00L of acid rain with a PH equal to the average PH of rain in Maine (ph = 5.0). Concentration of H2SO4 to use = .00100M I am absolutely confused...please help

    asked by Henry
  139. French

    How do you say " I like to..."?

    asked by Amber
  140. English

    1. We held a meeting to discuss why the sale of tickets to the class dance has been so (sluggish, rotund) and what we can do about it. Sluggish? 2.At the State Fair, we separated to visit different exhibits, but we agree to (saunter, rendezvous) at the

    asked by Jerald
  141. Math

    Jeramie has a jar of nickels and dimes. There are 200 coins worth $14.00. How many of each type of coin are in the jar. :)

    asked by D
  142. science

    how do i calculate the average speed and velocity on a graph??

    asked by valeria
  143. math

    Mariah is planting a rectangular rose garden,in the center of the garden, she puts a smaller rectangular patch of grass. the grass is 2ft by 3ft. What is the area of the rose garden?

    asked by ayeisha
  144. Chemistry

    Separating a mixture of benzoic acid, acetanilide in dichloromethane An over zealous student decided to conduct this experiment by distilling all the dicholoromethane at the very beginning and then separating the solid residue of benzoic acid and

    asked by Simone
  145. math

    3-4/5-3/10=? 8-5/12-1/3=?

    asked by mike
  146. Math

    Roger knows how many keys a piano has. He knows that some of the keys are broken. How can he find the number of keys that work?

    asked by Justin
  147. Math

    The height of a plant after each of the first three weeks was 7mm, 20mm, and 33mm, respectively. If this pattern of growth continues, in what week will the plant be more than 100mm tall? The answer is 9 weeks. This is what I did, and it's clearly wrong: tn

    asked by A Canadian
  148. chemistry

    You add 9.1 of iron to 25.50 of water and observe that the volume of iron and water together is 26.66 . Calculate the density of iron.

    asked by mikael
  149. Math Please it is Urgent!!!

    11. Write a sequence of transformations that maps triangle ABC onto triangle A''B''C''. Here is ABC: A(1,8), B(3,12), C(4,4) Here is A''B''C'': A''(3,-3), B''(5,-6) C''(6,2) Please help I have tried everything and this is over due. There is no choicies bc

    asked by Jman
  150. Math

    You walk at 4 miles per hour for 1/2 hour, and then jog at 6 miles per hour for h hours. The total distance that you cover both walking and jogging is 6 miles. Write an equation that represents this situation.

    asked by lucy
  151. math

    5. Dan’s house is north 3 miles and west 3 miles from Amy’s house. Find the distance between Amy’s house (6, –3) and Dan’s house (3, 0). (Estimate to two decimal places.)

    asked by noy
  152. reading

    Financial advisors generally figure that ones disposable income will be what percent less than the gross income. A.5-10 B.10-20 C.20-30 D.40-50

    asked by tisha
  153. Physics

    If a bullet was fired straight up at a speed of 30 m/s, what would be the total time for it to return to its starting point?

    asked by Mike
  154. Physics

    If a bullet was fired straight up at a speed of 30 m/s, what would be the total time for it to return to its starting point?

    asked by Mike
  155. Physics

    If a bullet was fired straight up at a speed of 30 m/s, what would be the total time for it to return to its starting point?

    asked by Mike
  156. Math

    The area of certain rectangle is 288 yd. the perimeter is 68 yd. if you double the length and width, what will be the area and perimeter of the new rectangle.

    asked by Jake
  157. Physics

    If a bullet was fired straight up at a speed of 30 m/s what would be the total time for it to return to its starting point?

    asked by Mike
  158. skyline

    a scale model of a car is 8 inches long. the actual car is 12 feet long. what is the scale of the model?

    asked by corey
  159. math

    What are some examples of related data that have 10-25 points each?

    asked by t
  160. English

    8.Letters of protest (deluged tinted) the Mayor's office when he proposed an increase in the sales tax deluged? 9.It is good for you to "stand up for your rights" but you should not do so in a way that (verges subordinates) on discourtesy verges? 10.There

    asked by Jerald
  161. Math

    V square over 25-1=12

    asked by Treven anspach
  162. Math Fractions

    Tom has eight red marbles and three blue marbles. What fraction of Tom's marbles are blue

    asked by Cedric
  163. ms sue

    Ms. Sue can you help me ihave tried

    asked by Jman
  164. chemistry - Can you please check

    Calculate the amount (g) of each of the following salts that need to be added to a 200 mL volumetric flask to produce a 2 M solution of S. CaSO4 (NH4)2SO4 Fe2(SO4)3 Dr. BOB222, Could you please check the following? Thank you. CaSO4: moles x atomic mass =

    asked by Sejul
  165. math

    What is the least number of points to form a line segment.

    asked by I'onna
  166. working in a pharmacy

    when a "special" begins to lose its impact you should? a/transfer the products to the shelves at their normal cost b.move the products to another spot c.set up an attractive display using your product knowledge my answer is d

    asked by susue
  167. college chemistry

    if a cheetah runs 60 miles per hour how many milliseconds will it take to run 33 meters

    asked by Evelyn
  168. AP Physics B

    Through a pipe of diameter 15.5 cm , water is pumped from the Colorado River up to Grand Canyon Village, on the rim of the canyon. The river is at 564 m elevation and the village is at 2096 m . At what minimum pressure must the water be pumped to arrive at

    asked by Steph
  169. math (urgent,please answer)

    What are some examples of two sets of related data with 10-25 data points each?

    asked by t
  170. math

    if Tom is driving 64 kilometers/hour what is his speed in miles/hour?

    asked by Charles
  171. Math

    In a lab experiment, the count of a bacteria doubles every hour. a)at 1pm, there was 23000 bacteria. How many bacteria will be present at midnight? I can't seem to get the correct answer. The answer is 47 104 000 bacteria. Thanks very much in advance!

    asked by A Canadian
  172. Math

    Alice is three times as old as Jack. In 10 years she will be twice as old as Jack. How old are Alice and Jack now? How old will they be in10 years

    asked by Tara
  173. math

    length of a shoe

    asked by miai
  174. Physics

    A bullet moving at a speed of 154 m/s passes through a plank of wood. After passing through the plank, its speed is 149 m/s. Another bullet, of the same mass and size but moving at 91 m/s, passes through an identical plank. What will this second bullet's

    asked by Andrew
  175. Physics

    A bullet moving at a speed of 154 m/s passes through a plank of wood. After passing through the plank, its speed is 149 m/s. Another bullet, of the same mass and size but moving at 91 m/s, passes through an identical plank. What will this second bullet's

    asked by Andrew
  176. math (Urgent, please answer)

    What are some examples of two sets of related data with 10-25 data points each?

    asked by t
  177. Math

    Estimate a 15% tip for each amount. $9.89 $27.59

    asked by Sandra
  178. Algebra 2

    Suppose you make $10 an hour at your job that you have been working at for 5 years. Each year, you get a 6% raise. 1. Write an equation that models this situation.

    asked by Anonymous
  179. Math

    How many total faces,edges, vertices does a square pyramid have?

    asked by Ryan
  180. Math

     The height of a plant after each of the first three weeks was 7mm, 20mm, and 33mm, respectively. If this pattern of growth continues, in what week will the plant be more than 100mm tall?  The answer is 9 weeks.  This is what I did, and it's clearly

    asked by A Canadian
  181. Chemistry

    What is the molarity of a nitric acid solution if 43.33 mL of 0.10000 KOH solution is needed to neutralize 20.00 mL of the acid?

    asked by Anonymous
  182. Math

    My book says that I need to give another name for /_A , What does that mean?

    asked by Kk
  183. Math help please Ms. Sue

    7. 2x + 3(x – 2) – 3(x – 6) (1 point) 2x + 12 2x – 8 8x – 24 2x – 24 I do not understand how to do this.

    asked by ?
  184. physics

    You and a friend each drive 50 km to the same destination. You travel at 88.5 km/h and your friend at 94.5 km/h. How long will your friend wait for you at the end of the trip? Answer in units of min

    asked by gera
  185. Physics

    Brittany throws a slingshot pellet directly at a target that is far enough away to take 0.190 s to reach. How far below the target does the pellet hit? Enter m as unit. How high above the target should she aim? Enter m as unit.

    asked by Jessica-- please help!
  186. physics

    A man jogs at a speed of 1.7 m/s. His dog waits 1.9 s and then takes off running at a speed of 2.7 m/s to catch the man. How far will they have each traveled when the dog catches up with the man? Answer in units of m

    asked by gera
  187. Precalculus

    How do you solve this problem: sin(90* - x) ----------------- cot^2(90* - x) + 1 The * is a degree symbol!! I haven't seen any problems with degrees in it, usually it's only a variable! If anyone could give me guidelines or show me where to start, I'd

    asked by Anna
  188. physics

    Light from the sun reaches Earth in 8.3 min. How far is the Earth from the sun? The velocity of light is 3 × 108 m/s. Answer in units of m

    asked by gera-pleaseeeee
  189. physics

    A glacier advances at 3.6 × 10−6 cm/s. Howfarwillitmovein4.1y? Answer in units of cm

    asked by gera-pleaseeeee
  190. physics

    A jet travels at 435 m/s. How long does it take to travel 253 m? Answer in units of s

    asked by gera-pleaseeeee
  191. social studies

    what are some similarities in 2009 president inauguration and 2013 president inauguration for Barack obama

    asked by Anonymous
  192. physics

    Ann is driving down a street at 54 km/h. Suddenly a child runs into the street. If it takes Ann 0.722 s to react and apply the brakes, how far will she have moved before she begins to slow down? Answer in units of m

    asked by gera-pleaseeeee
  193. physics

    A cyclist maintains a constant velocity of 4.8 m/s headed away from point A. At some initial time, the cyclist is 255 m from point A. What will be his displacement from his starting position after 88 s? Answer in units of m

    asked by gera-pleaseeeee
  194. physics

    Both car A and car B leave school at the same time, traveling in the same direction. Car A travels at a constant speed of 75 km/h, while gonzalez (gg24935) – HW 02 – wieman – (053305132) 2 car B travels at a constant speed of 89 km/h. How far is Car

    asked by gera-pleaseeeee
  195. Trig

    True or false? tan x = tan(x-6pi)

    asked by Jay
  196. Pre Calculus 12

    Laws of Logarithms Evaluate: without using a calculator, except for the first one. The 5.6 is supposed to be subscript, but i don't know how to make it small. 4log(5.6)84 log84/log5.6 Do I multiply this by four or something? both of the logs?

    asked by Shreya
  197. Pre Calculus 12

    Solving problems that involve logarithms the sound at a rock concert decreases by 10% for every 5m travvelled. how far does it take for a volume of 2000 decibels to decrease to 20 decibels? i don't know what to do for this one the growth decay formula i

    asked by Shreya
  198. Physics

    A filament bulb and a resistor are connected in series to a battery. Which of the following will contribute to the load of the circuit? A. Bulb B. resistor C. Bulb and resistor D. none I'm thinking the resistor, but I'm unsure. Thanks

    asked by Need some help
  199. History

    Explain how Pennsylvania was obtained in America.

    asked by Katir
  200. Chemistry

    Sort each of the following events based on whether the solubility of the indicated gas will increase, decrease, or stay the same. Each phrase specifies the gas involved and the change in its environment. 1. The temperature is increased 2.the partial

    asked by Anon
  201. biology

    what is theoffspring of a yellow seed and a green seeds genotype and phenotype?

    asked by mary
  202. geometry

    which side of triangle DEF corresponds to:

    asked by shantellis brown
  203. Math 8 - HELP!

    7 times a number decreased by 4 is the same as 6 plus twice that number my answer - 7n - 4 = 6 + 2n am i correct and can you help me solving it, please!!! thank you! :)

    asked by Lauren
  204. Math

    How do I go about solving this math problem. -172=-1-9p

    asked by Robert
  205. Math

    amy makes 6% commision on every home sold. If amy makes 12500 in 2 months what is her total in home sales for the 2 moths

    asked by Nina
  206. Chemistry

    You need to dissolve CaCl2 in water to make a mixture that is 31.5% calcium chloride by mass. If the total mass of the mixture is 254.6 g, what masses of CaCl2 and water should be used?

    asked by Anon
  207. math

    how do you simplify fractions?

    asked by serenity
  208. Math

    How do I solve this math problem. -2-10a=158

    asked by Robert
  209. Math help please Ms. Sue agian

    Write an equation with a variable on both sides of the equal sign that has infinitely many solutions. Solve the equation and explain why it has an infinite number of solutions. (3 points) I need help with this one too. Thank you! :)

    asked by ?
  210. Pre Calculus 12

    Laws of logarithms evualuat using change of base rule log(√8)16 ^the square root 8 is supposed to be subscript. the answer i got was 8/3, not sure if that is right

    asked by Shreya
  211. Math

    How do I solve this math problem. -10+ V_=-3. 2

    asked by Robert
  212. math

    use a factor of 2 to write an equivalent expression for 10y+4x

    asked by kevin arias
  213. social work writing

    What is the parallel structure of this sentence? To install new carpeting, workers must first remove the old carpet, prepare the surface, and then lay down the matting

    asked by stan
  214. math

    estimate the sales tax and final cost of a book that costs $12.99 with a sales tax of 6%

    asked by shana
  215. Math 8 - HELP! (PLZ!)

    7 times a number decreased by 4 is the same as 6 plus twice that number my answer - 7n - 4 = 6 + 2n am i correct and can you help me solving it, please!!! thank you! :)

    asked by Lauren
  216. algebra

    What is the quotient in simpliest form? State any restrictions on the variable. x+2/x-1 divided by x+4/x^2+4x-5. My answer (x+2)(x+5)/x+4; don't get the restriction part either -5,-4 or 1,-4,-5 Can someone please help?

    asked by dirtrider
  217. physics

    How do your measured values of centripetal force compare to the calculated values of centripetal force?

    asked by tiffany
  218. Science

    What is electrolysis and what is the purpose of it? Is it dangerous?

    asked by Joey
  219. Math

    HELP! Input:1 1/3 Output 7/12 Input 2 3/5 Output 1 17/20 Input 3 5/6 Output ? Input ? Output 3 5/8. What is the rule, and what are the question marks values?

    asked by Patrick
  220. math

    A warehouse is 120 feet tall and casts a shadow 288 feet long. At the same time, julie casts a shadow 12 feet long. how tall is julie?

    asked by lizz
  221. algebra

    A candle in the shape of a circular cone has a base of radius r and a height of h that is the same length as the radius. Which expresses the ratio of the volume of the candle to its surface area(including the base)? For cone, V=1/3pir^2h and SA=pir^2+pir

    asked by dirtrider
  222. Geometry

    What is a Pythagorean theorem ?

    asked by Raina
  223. Math

    If you have 8 yards of twine and you cut the twine into 3/4 pieces each . How many pieces can you cut?

    asked by Ron
  224. Chemistry

    The mass of a single barium atom is 2.28E-22 grams. How many barium atoms would there be in 182 milligrams of barium?

    asked by Kim
  225. science

    2. Which of the following is responsible for carrying nutrients to and waste from the body’s cells? (1 point) plasma red blood cells red and white blood cells white blood cells 3. _________ defend the body against disease. (1 point) Fibrin Red blood

    asked by tesj
  226. Physics

    A baseball is thrown with an initial velocity of 37 m/s at an angle of 26 degrees above horizontal, from the top of the building which is 72 meters high. A. What will be the horizontal and vertical components of this baseballs velocity? B. what will be the

    asked by A
  227. Math 8 - help!

    Name an ordered pair on the x-axis and y axis.

    asked by Laruen
  228. Math

    Sue has 8 yards of twine she cuts the twine into equal pieces of 3/4 feet each how many pieces can he cut?

    asked by Ron
  229. Trig

    (csc(B)+cot (B))(csc(B)-cot(B))

    asked by VD
  230. Trigonometry

    cos 17pi/6 + tan 17pi/6

    asked by dan
  231. Math

    When you divide a whole number by a fraction with a numerator of 1 explain how you can find the quotient?

    asked by Ron
  232. Math

    What is 2 2/4 +2 2/4 + 6 1/2=?

    asked by Ron
  233. Math

    What is a good reference to use when estimating the mass of a small object?

    asked by Jessica
  234. Biology

    What piece of evidence would actually allow us to measure the actual rate at which continental drift is occurring?

    asked by Mary
  235. HELP PLSS SCIENCE

    2. Which of the following is responsible for carrying nutrients to and waste from the body’s cells? (1 point) plasma red blood cells red and white blood cells white blood cells 3. _________ defend the body against disease. (1 point) Fibrin Red blood

    asked by tesj
  236. College Finite

    A student wants to buy 3 CDs, but assume that there are 3 CDs featuring the piano, 5 CDs featuring the trumpet, and 3 CDs featuring the saxophone. In how many ways can the selection be made if CD's featuring at least 2 different instruments are selected?

    asked by Emily
  237. Math 8 - help!

    Write the equation of the line that passes through the points (1,6) and (-1,-2) pleas help

    asked by Laruen
  238. Math

    If Bob hikes 5/8 of a mile in 1/3 of an hour. How fast is going in miles per hour?

    asked by Cam
  239. Math

    Which is 1.19 rounded to the nearest fourth?

    asked by Anonymous
  240. math

    how do I write equation for the following? input a 20/28/36/44/52 output b 5/7/9/11/ ? ? is 13

    asked by Marcus
  241. Pre-Algebra

    Bill purchased 4 pens for $3.32, including $.16 sales tax. Find the cost of 1 pen. I need this put into an equation with a variable.

    asked by John Rapolli
  242. Chem II

    A solution is prepared by dissolving 12.7 g Ca(NO3)2 in enough water to make 100.0 mL of stock solution (molar mass is 164.09-1). What is the molarity of the solution?

    asked by vera
  243. Chem

    A student measures the following data regarding the heat of fusion of ice: 25.8 g ice at 0.0°C is placed into the calorimeter which contains 100.0 g water at 21.7°C. The final temperature comes to 1.5°C. The calorimeter has a heat capacity of 15.6

    asked by Susie
  244. math

    Write a variable expression for each word phrase. 1. two times the number of windows 2. 81 increased by n 3.eleven more than a number $15 times the number of hours

    asked by john
  245. Intergrated science

    I need help... I don't know where to begin to answer this question. We are working in force/work ok... This is the question: A pole vaulter weighing 175 lbs leaps 16 ft over a bar . How much work is done?

    asked by Harris
  246. IT

    How would I write pseudocode that describes the process of looking up a word in the dictionary?

    asked by Jackson
  247. Math

    The performing arts theater has 24 rows of seats.There are 48 seats in each row.How many people can this theater seat?

    asked by Lila
  248. physics

    The displacement of a particle in centimeters is given by y=8 sin (2πft). If f=20 Hz, find the displacement and the velocity of the particle at a time t=0.01 s and 0.07 s. (ans: y=7.61 cm, v=3.11 m/s, y=4.70 cm, v= -8.13 m/s) After I plug in f to get w

    asked by TOm
  249. College Finite

    Assume that you have a total of 9 people on the committee: 2 black males, 1 black female, 1 white male, and 5 white females. Party rules require that at least one black and at least one female hold one of the three offices. In how many ways can the

    asked by Emily
  250. Computer Programming

    Draw a structured flowchart and write pseudocode that describes the process of looking up a word in a dictionary.

    asked by Jackson
  251. algebra 1

    From 1990 to 2000, the number of thousand visits by people to Bryce Canyon National Park increased about 23.9 thousand visits per year. In 2000, there were 1102.4 thousand visits to the park. Write an equation that gives the number of thousand visits as a

    asked by Mom Needs Help
  252. Pre Calculus 12

    Graphing trigonometric functions A sinusoidal function has a maximum at (2,10) and its next minimum (5,-2) find an equation that represents this situation A sinuosoidal function has a zero at (5,0) and its next minimum is (7,-4). find an equation that

    asked by Shreya
  253. us history

    what problems did the us have in the n.w. territory

    asked by jj
  254. geometry

    Suppose the cordinate of P is 2, PQ = 8, and PR = 12. What are the possible cordinates of the midpoint of the given segment? PQ PR QR

    asked by Renee
  255. poetry

    What's the tone of the poem Young by anne sexton

    asked by Poppa
  256. Pre Calculus 12

    The height h, in metres, above the ground of a car as a ferris wheel rotates can be modelled by the function h(t) = 18cos(πt/80) +19 what is the minimum height of a car? do i like subtract 19 from 18 ? what is the maximum height of a car? do i add the 19

    asked by Shreya
  257. us history

    what happened as a result because of the whiskey rebellion

    asked by jj
  258. math

    Find a fraction that reduces to 3/4 when both the numerator and denominator are decreased by i, and reduces to 4/5 when both the numerator and denominator are each increased by 1. I know the answer is 7/9, but i don't know how to solve (i must use a system

    asked by Molly
  259. Pre Calculus 12

    Modelling with sine/cosine A Ferris wheel has a diameter of 30m. The bottom of the wheel is 1.5m off the ground it takes 3.5min to make one complete revolution. a person gets on ferris wheel at its lowest point at time = 0. write an equation that

    asked by Shreya
  260. Sociology

    The text, Introduction to Sociology, describes many individuals who have contributed to our current view of sociology, including: C. Wright Mills Howard Becker W. I. Thomas Auguste Comte Emile Durkheim Herbert Spencer Karl Marx Erving Goffman’s Harriet

    asked by Melanie
  261. math

    $800 worth of tickets were sold.adult price is $6.children is $3 and seniors $2. 90 adult purchase ticket,60 children purchase tickets.how many tickets were purchase at senior price and how would you write an equation and solve to find the solution? how do

    asked by sandy
  262. History

    What cause did Webster support throughout his political career?

    asked by Emma
  263. English

    I need help writing a lead sentence, it has to answer the who, what, why, when and how The Director of Budget and Accounting, Patsy Moore, shared a presentation about the 2013 Capital Improvement Plan on Monday during the City Commission Meeting in

    asked by Blaze
  264. Math

     The height of a plant after each of the first three weeks was 7mm, 20mm, and 33mm, respectively. If this pattern of growth continues, in what week will the plant be more than 100mm tall?  The answer is 9 weeks.  This is what I did, and it's clearly

    asked by A Canadian
  265. math 090

    need help with my need year sent i need in a math class so if you can help me that would be good

    asked by mary powe
  266. MATH

    THREE QUARTERS OF A POUND OF HONEY COSTS $4 HOW MUCH HONEY WOULD YOU GET FOR $6

    asked by DAN
  267. Pre Calculus 12

    Another sine/cosine question i don't get in vancouver on certain day, high tide is 20m at 2am, the next low tide is 8m at 6am, what an equation that represents height (h)of water at any time (t)since midnight) what is the height of water at 8:45AM? What is

    asked by Shreya
  268. Physics

    A cylinder with a movable piston contains gas at a temperature of 27 degrees celsius, a volume of 1.50 meters cubed, and an absolute pressure of 0.200 X 10 to the fifth Pa. What will be its final temperature if the gas is compressed to 0.700 meters cubed

    asked by Clay
  269. college algebra

    (9.87x10^6)(34x10^11) I got 3.3558e19 but I don't think its right

    asked by debbie
  270. college algebra

    (9.87x10^6)(34x10^11) I got 3.3558e19 but I don't think its right

    asked by debbie
  271. Chemistry

    Given that ∆Hº(Br(g)) = 111.9 kJ/mol ∆Hº(C(g)) = 716.7 kJ/mol ∆Hº(CBr4(g)) = 29.4 kJ/mol calculate the average molar bond enthalpy of the carbon-bromine bond in a CBr4 molecule.

    asked by Kristen